期刊名称：Proceedings of the National Academy of Sciences
印刷版ISSN：0027-8424
电子版ISSN：1091-6490
出版年度：1988
卷号：85
期号：8
页码：2728-2732
DOI：10.1073/pnas.85.8.2728
语种：English
出版社：The National Academy of Sciences of the United States of America
摘要：To investigate how T cells recognize allogeneic class I proteins encoded by the major histocompatibility complex (MHC), we examined the human cytotoxic T lymphocytes (CTL) elicited in a mixed lymphocyte reaction against a lymphoblastoid B-cell line (JY) whose MHC-class I proteins are HLA-A2 and -B7. By panning the responding T cells on plates that were coated with purified HLA-A2, an essentially pure population of CD8+ anti-HLA-A2 CTL was isolated in a single step and established as a cell line designated A2p. In addition to lysing HLA-A2+ target cells, the A2p cells lysed HLA-A2- cells, including mouse cells (P815), when purified native HLA-A2 was attached to them, but not when denatured HLA-A2 was attached. Thus, contrary to the general rule that T cells recognize sequential antigenic determinants in denatured protein antigens, the alloreactive CTLs appear to recognize determinants that depend upon the native configuration of HLA-A2; however, the possibility that these T cells recognize a peptide adduct persistently associated with purified, soluble HLA-A2 has not been ruled out.
